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Related Manuals for SIGLENT TECHNOLOGIES SDM3045X
Summary of Contents for SIGLENT TECHNOLOGIES SDM3045X
- Page 1 SDM3045X Digital Multimeter Service Manual SM06034-E02C SDM3045X Service Manual I...
- Page 2 Copyright SIGLENT TECHNOLOGIES CO., LTD All Rights Reserved. Trademark Information SIGLENT is the registered trademark of SIGLENT TECHNOLOGIES CO., Declaration ⚫ SIGLENT products are protected by patent law in and outside of the P.R.C. ⚫ SIGLENT reserves the right to modify or change parts of or all the specifications or pricing policies at company’s sole decision.
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Page 3: General Safety Summary
Use Proper Fuse. Use only the specified fuse. Do Not Operate Without Covers. Do not operate this instrument with covers or panels removed. SDM3045X Service Manual III... - Page 4 Avoid Circuit or Wire Exposed. Do not touch exposed junctions and components when the unit is powered. Do Not Operate With Suspected Failures. If you suspect damage has occurred to this instrument, have it inspected by qualified service personnel before any further operation. Any maintenance, adjustment or replacement especially to the circuits or accessories should be performed by SIGLENT authorized personnel only.
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Page 5: Table Of Contents
Analog board Clock Check ..................23 Check the Main Board ......................23 Voltage Check ....................... 23 Microprocessor Check ....................24 Quick Guide for General Failures ..................24 Maintenance ..........................25 Maintenance Summary ......................25 Repackaging for Shipment ....................25 SDM3045X Service Manual V... -
Page 7: General Features And Specifications
General Features and Specifications The SDM3045X is a multimeter with 4½ digit reading resolution and dual-display suited for any application requiring high-precision, multifunction, and automated measurements. It features a combination of basic measurement, multiple math, and display functions, etc. General Features ⚫... -
Page 8: Specifications
Specifications DC Characteristics Accuracy±（% of Reading + count） Accuracy Test current or （one year； Function Range Resolution Load voltage 23℃± 5℃） 600 mV 0.01 mV 0.02+ 6 0.0001 V 0.02+ 6 0.001 V 0.02+ 6 DC Voltage 60 V 600 V 0.01 V 0.02+ 6 0.1 V... - Page 9 0.0001 A 0.5 + 20 2 kHz – 10 kHz 0.0001 A 2.5 + 20 20 Hz – 45 Hz 0.001 A 1.5 + 45 10 A 45 Hz – 2 kHz 0.001 A 0.5 + 35 SDM3045X Service Manual 3...
- Page 10 2 kHz – 10 kHz 0.001 A 2.5 + 25 Additional wave crest factor error ( not Sine ) Wave crest coefficient Error（% Range） 0.05 Remarks: [1] Specifications are for 0.5 Hour warm-up, “Slow” measurement rate and calibration temperature 18℃~28℃. [2] 10% over range on all ranges except for DCV 1000 V, ACV 750 V, DCI 10 A and ACI 10 A.
- Page 11 0.03℃ Remarks: [1] Specifications are for 0.5 Hour warm-up, not include probe error. [2] Specifications are for 4-wire measure or 2-wire measure under “REF” operation. [3] Built-in cold terminal compensation for thermocouple, accuracy is ± 2℃. SDM3045X Service Manual 5...
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Page 12: Prepare Information
⚫ How to use self-test routine ⚫ How to recall factory Default settings For more detailed information about multimeter operation, please refer to the User Guide for the SDM3045X. Functional check This functional check covers three areas by which you can verify if the multimeter is working correctly. -
Page 13: Self Test
Display Number Hold Probe Hold Self Test The SDM3045X provides self-test functions, including Key Test, LCD Test, Beeper Test and Chip Test. Operating Steps: 1. Press [Shift] > [Utility] > Test /Admin > Board Test 2. To test the keys: Select Key to enter the key test interface. -
Page 14: Performance Verification
Performance Verification Use the performance verification tests in this section to verify the measurement performance of the instrument using the instrument’s specifications listed in the product data sheet. Performance verification tests are recommended as an acceptance test when you first receive the instrument or after performing calibration. If the instrument fails performance verification, calibration adjustment or repair is required. -
Page 15: Test Considerations
± 60 mΩ 6 kΩ ± 600 mΩ ± 6 Ω 60 kΩ ± 60 Ω 600 kΩ Short 4-wire Ohms ± 300 Ω 6 MΩ 60 MΩ ± 3 kΩ 100 MΩ ± 30 kΩ SDM3045X Service Manual 9... -
Page 16: Dc Voltage And Dc Current Gain Verification
DC Voltage and DC Current Gain Verification Input Error from Nominal Voltage Function Range (1 years) -600 mV ± 180 μV 600 mV 600 mV -6 V ± 1.8 mV 10 V ± 8 mV -60 V 60 V DC Volts ±... -
Page 17: Frequency Accuracy Verification
600 V 50 kHz 600 V ± 12.4 V 100 kHz ± 18.4 V 750 V 1 kHz ± 6.2 V 250 V 50 kHz 750 V ± 5.4 V 75 V 100 kHz ± 3.4 V SDM3045X Service Manual 11... -
Page 18: Capacitance Verification
Input Error from Nominal Irms Frequency Range (1 years) 1 kHz ± 0.12 mA 20mA 20 mA 10 kHz ± 0.54mA 1 kHz ± 0.41 mA 1 kHz 200 mA ± 1.2 mA 200mA 10 kHz ± 5.4 mA 20mA 1 kHz ±... -
Page 19: Assembly Procedures
Assembly Procedures This chapter describes how to remove the major modules from the SDM3045X. To install the removed modules or replace new modules, please follow corresponding operating steps in reverse order. Security Consideration Only qualified personnel should perform the disassembly procedures. -
Page 20: Disassembly Procedures
Disassembly Procedures 1. Turn off the power and remove all measurement leads and other cables, including the power cord, from the instrument before continuing. 2. Rotate the handle to the upright position and remove it by pulling outward where it attaches to the case. 3. - Page 21 4. Remove the screw on the bottom of the instrument and place it in a safe location for re-assembly. Slide off the instrument cover as indicated by the arrow shown below. SDM3045X Service Manual 15...
- Page 22 5. Remove the cable plug(in the red circle and yellow box shown below) connected to the main body 6. Unscrew the 5 captive screws in the rear metal cover and remove the rear metal cover. 7. Remove the cable plug connected to the front panel.
- Page 23 8. Remove the cable and unscrew all the screws then you can remove the PCBA. This concludes the disassembly procedure. To re-assemble the instrument, reverse the procedure. SDM3045X Service Manual 17...
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Page 24: Troubleshooting
(mainly main board and analog board) by measuring the corresponding test points and checking the signals on specific connectors to help in determine the reason for the failure that has been encountered while operating the SDM3045X digital multimeter. ESD Precautions... -
Page 25: Analog Board Drawing
It mainly works on signal processing such as AC is converted to DC in order to measure AC magnitude. Please refer to the following drawing to quickly locate the test points on the analog board for easy resolution of the failures you encounter. SDM3045X Service Manual 19... -
Page 26: Main Board Drawing
Main Board Drawing The main board is used to control and manage the whole internal system of the multimeter. It completes the GUI function, controlling and configuration function for analog board as well as man-machine interactions. Please refer to the following drawing to quickly locate the test points on the main board for easy resolution of the failures you encounter. -
Page 27: Check The Power Supply
SIGLENT. Note: The main power supply provides an input fuse to protect against the danger of fire in the event of a failure of the power supply circuitry. However, SDM3045X Service Manual 21... -
Page 28: Check The Analog Board
this fuse will not fail ("open" or "blow") in normal power supply operation except after a significant overload occurs. Replace the entire main power supply assembly if the input fuse fails. Check the Analog Board If it is desired to remove the analog board from the metal shelf inside the multimeter, you’d better place it on a clean, insulated mat. -
Page 29: Analog Board Clock Check
SIGLENT. Table 6-6 Test DC voltages of the main board Test point Name Voltage value (V) Error limit (V) ± 2 1 to 2 +8.6 ±0.1 +3.3 ±0.2 ± 2 TP86 Solder SC16 SDM3045X Service Manual 23... -
Page 30: Microprocessor Check
Microprocessor Check Observe the LED light on the main board, which indicates the working state of microprocessor chip. If the light turns on, then the corresponding codes have been loaded successfully and the chip is in an operating state. Otherwise, there may be a problem with it. -
Page 31: Maintenance
If the original shipping container is not available, place your unit in a container which will ensure at least 4 inches of compressible packaging material around all sides for the instrument. Use static-free packaging materials to avoid additional damage to your unit. SDM3045X Service Manual 25... - Page 32 Contact SIGLENT SIGLENT Technologies Co., Ltd Building No.4 & No.5, Antongda Industrial Zone, 3rd Liuxian Road, Bao'an District, Shenzhen, China Tel:+ 86-755-3688-7876 Fax: + 86-755-3359-1582 E-mail: sales@siglent.com Web: http://int.siglent.com/ SIGLENT Technologies NA, Inc 6557 Cochran Rd Solon, Ohio 44139 Tel: 440-398-5800...
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